Puppet-valve



(MOdeL) H. P. PRISBIE.

PUPPET VALVE.

Patented Oct. 25,1881.

I!!! 2E5? K? l1 1 KfiW L w C I, v-1 y {it Uwrren STATES PATENT @rrrca.

HAMLIN F. FRISBIE, OF CINCINNATI, OHIO.

PU PPET-VALVE.

SPECIFICATION forming part of Letters Patent No. 248,728, dated. October25, 1881.

Application filed April 8, 1881.

To all whom it may concern:

Be it known that I, HAMLIN F. FnrsBrE, of Cincinnati, in the county ofHamilton, and in the State of Ohio, have invented certain new and usefulImprovementsin Puppet-Valves; and I do hereby declare that the followingis a full, clear, and exact description thereof, reference being had tothe accompanying drawings, and to the letters of reference markedthereon, making a part of this specification.

This invention relates to certain improvements in puppet-valves forengines of various descriptions-such as steam-engines, air-engines,gasengines, and the like; andithas for its objects to provide certainmeans whereby the valve may be securely held to its seat by pressurewithin the valve-chest when said valve is seated, to balance the valvewhen raised from its seat, and to provide a means whereby the valve-rodmay be kept truly in line,as more t'ullyhereinatter specified. Theseobjects I attain by the mechanism illustrated in the accompanyingdrawings, in which- Figure lrepresents a vertical sectionalview of myimproved valve, and Fig. 2 a bottom view thereof.

TheletterA indicates acap, which is adapted to fit over the valve-chestot' a steam or'other engine, and to be secured thereto in any convenientmanner. The said cap is provided with a cylindrical extension,B, whichis adapted to set into the valve-chest when the cap is in place, andwhich reaches to within a short distance of lhevalve-seat.

Theletter (J indicates the valve, which is cylindrical in form andadapted to fit and slide in the cylindrical extension B. The said valveon its periphery is provided with a series ofannular grooves, D and E,the grooves D being filled with a suitable packing, and the grooves Eserving as a water packing.

The letter I indicates a centrally projecting boss extending from thecap into the interior of the hollow valve and casing. The said boss maybe cast on or with the cap; but it is preferably made separatetherefrom, and screwthreaded at its upper end,which screw-th readedportion is adapted to be secured in afemale screw-threaded aperture inthe cap.

Theletter Gr indicates the valve rod or stem which extends through theboss, which is properly bored for the purpose. The lower end of said rodconnects with a central hub, H,at the lower end of the cylindricalvalve,the saidhub being connected to the valve by means of ra- (ModeL)dial arms I. The upper end of the valve stem or rod passes through astufting-box, K, and the lower end is provided with an annular recess,M, in the central hub, H,and is confined therein by means of ascrew-plug, N, secured to the lower end of thecentralhub. Thelower endof the valve is provided with a flange, P, which constitutes a weight bymeans of which the valve is dropped readily to its seat and is kept frombounding from it. The flange may be varied in diameter, so as to adjustthe weight as may be desired.

The valve cap and cylinder are set in the valve-chamber in the usualmanner, and the operation of the valve is as follows: When seated thepressure of steam on the valve keeps it firmly in its place. When liftedthe steam flows through the lower end of the valve, and, collectingabove, balances it. The centrallyextendingboss, by occupying mostot' thespace within the valve and casing, displaces the steam, and thusobviates to a great extent the injurious effects of condensation.

The letter S indicates a space around the valve-stem in the central hub,which forms a water packin Having thus described my invention, whatIclaim, and desire to secure by Letters Patent, lS

1. In combination with the cap, its' cylindrical extension, and centralboss, the valvestem and valve, whereby steam is displaced in thevalve-chamber and the effects of condensation obviated, substantially asand for the purposes specified.

2. In combination with the cap and its cylindrical extension, thecylindrical valve, shouldered, as described,as and for the purpose setforth.

3. In combination with the cap, cylindrical extension, and central boss,the valve-stem having an annular head at its lower end, and the centralhub provided with a seat for the same, substantially as specified.

4. In a DHPPQlZ-VillVG, the combination, with the cap A, havingcylindrical extension B,ofan inwardly-projecting steam-disp acing boss,F, for the purpose set forth.

In testimony whereot'I affix my signature, in presence ot'two witnesses,this 8th day ofApril, 1881.

HAMLIN F. FRISBIE.

Witnesses:

H. AUBREY ToULMIN, ARTHUR Vrssnn.

